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Showing results for tags 'serial connection'.
Found 125 results
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Is it possible to connect an old Beijer E300 terminal to a Mitsubishi FX5U base unit via a serial interface (RS422 or RS485)? And which protocols do I need to select?
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Hello! I have TIA portal V19 version installed and I have a project with CPU 1513 PN and KTP900 panel. Connection between panel and CPU is not working. With older version, V18 it is working fine. Any ideas?
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I've setup an Omron NX102 PLC with two CIF105 cards communicating with about 40 MX2 VSD's (20 on each card). Generally it works pretty well. I used the attached document to set up the devices. The links on the document to the examples don't work, so I'm unsure if I missed anything. My problem is that every day, sometimes multiple times a day the communication seems to die. i.e I either loose the output to the VSD and nothing will run. Or it all runs but I loose the feedback, as in I get no running signal even though the drives are running causing a fault in my program. I'm at a bit of a loss as to what might be causing the issue. To resolve it, I put the PLC into program mode and back into run mode and everything is happy again. Has anyone had a similar issue or offer any advise? MX2_Control_Serial.pdf
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Omron CQM1H - NOS purchase - ERR/ALM LED On - Program Transfer Problems
JEJump posted a topic in CX-Programmer
Hi Everyone,I have a customer that needs a CQM1H (CPU51) replaced. They purchased the processor new-old-stock from a source they found online. It arrived in the original packaging and had the safety label around the top of the unit, so it seems that it is as advertised and no need to suspect that it would have problems. I purchased secondhand, a power supply to attach to it and program it from the bench instead of in the machine. The customer also provided me with an SD card containing the project file(s) for the machine. I am able to load the project in CX-ONE (running on Win 7) just fine. My computer has a native serial port (COM1) and I built a programming cable to work with the DB9 peripheral port according to a diagram I found online.The processor powers up right away with the ERR/ALM continuously on. No other LEDs came on initially, and after a bit of playing around with communications settings, I finally landed the right protocol and my computer seemed to identify the processor correctly. I compiled the source and attempted a transfer to the PLC. I got some failed message (or maybe messages) at the end of the transfer. It did seem to send all of the binary code, it just ended with an error message that I unfortunately didn't write down or grab a screenshot.Anyway, what I have now is a PLC processor with the ERR/ALM LED on always, I've never seen it in RUN mode, and now after the programming attempt, I'm seeing the COMM LED strobing at about a .5sec frequency (with or without a cable attached to the peripheral port), AND I cannot get CX-Programmer to again acknowledge the processor anymore. I'd like to reset this back to the way it arrived to me, but can't figure out how to make that happen offline. The DIP switches don't seem to cause that effect. I should say also that the DIP switch settings are all OFF except 3 and 7.Any help is much appreciated!Thanks,John -
I am trying to connect a Panel PC (Bartec RS-422) and an Omron PLC (CJ2H RS-232) I am using a Kinematics 2199 RS232 to RS422 converter. Results: Testing software Multiway v9.5 1) Using a usb to rs-232 cable on another PC - I am able to send and receive a hostlink commands between the panel rs-422 converter and the PC rs-232. commands come through correctly 2) Using the PC to connect to the PLC - If I connect directly to the PLC using the usb to serial cable and a short adapter I made to map the Omron PLC pin out 2-2,3-3, 5-9, I can send and receive hostlink commands to the PLC. Everything works as expected 3) Using the Panel and the USB Cable - If I connect the usb converter to the Panel I am also able to communicate with the PLC 4) using the RS-422 port on the Panel - If I connect the panel RS-422 port and converter and then connect to the PLC. I can only send commands; I cannot get any responses come through from the PLC. My converter box has LEDs on the RX and TX channels and I can see the PLC tries to send something. But something must be corrupted as multiway does not show and response. I have tried a bunch of things but I am at a loss on how to diagnose this issue. Since I can get the two PCs talking to each other sending and receiving, I can rule out any wiring issue between the converter box and Panel. Since I can plug the USB into the Panel and get it to work correctly, I can rule out any operating system issues and PLC configuration issues. The only link I cannot verify is that from the converter box to the PLC, I am not sure if the PLC can push hostlink data that has not been requested. I have no idea why I can write to the PLC but not read. If anyone can provide any insights, I would greatly appreciate it, It has been two days and I am stuck. I am looking at maybe getting a logic analyzer to try and see what the PLC is sending back, but that will be months away. I am happy to try any suggestions
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Hi, After a long time, searching for missing communication I think to have found the cause. In this CMP2A plc there is a receiving device connected to the RS-232 port. . During operation it can happen that in the same cycle there will be 2 functions to send different data.. I never receive those 2 data, only 1 is received. I can set a delay for sending this but this seems to be 'overkill', Is there a simpler way to do this..? The 2 pics are part of the program. After putting the P_off before the other transmits, I always receive the TXD(48) DM1621... Please advise,
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Factorytalk View SE - Connect to pre-existing HMI
CynertiaDoug posted a topic in Allen Bradley / Rockwell Automation
Hello, I'm a little experienced, a little new with (I hope) a fairly beginner question. I've got a customer that has a pre-existing HMI running a Factorytalk View SE - Network program. The customer would like to make some changes to the HMI, and I feel pretty confident that I could do this; the only problem is I'm having difficulty connecting to their system and downloading a version of the program that I can edit. Almost every How to video and instructional PDF that I can find appears to start from the premise that I created the program and have an existing copy on my computer or am starting from scratch, but that is not the case. I know the IP address of the Networked PC that is running the HMI and can ping it etc, but I do not know how to connect to it. I even have a copy of almost all of the files that the PC is running from the customer, but do not have a file that I can open in FTView to edit or change then download; I think I'm missing the .cli file or somesuch? Do I have to be directly logged on to the PC or can I be on my programming laptop and connect via Ethernet->switch->PC (I think I need FactoryTalk Linx for that, which I have a licensed copy of)? I know that Machine Edition requires a .mer file to be able to open and edit an HMI program, is the network edition the same? Any help would be greatly appreciated! -
Hello! I'm currently using NB designer v1.531 (Build 210511) and I'm having compilation errors. It states: Connecting... Connection Error PT HMI0 Compilation error! Cannot create pkg files! I'm have trouble understanding, what does this error mean? I'm not connecting to any HMI, I just want to compile the program and test it offline. The weirdest thing is that if i click "Compile" enough times, it will eventually compile, but this is really interrupting the workflow. Does anybody else have this issue?
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Hi, I have a problem with serial communication (no protocol) using rs485 module, the received data is error. I'm using CP1L CPU, CP1W-CIF11 module as transmitter, and USB to RS485 converter as receiver. When I check the received data on PC, it's incorrect (bit error?). I just send 2 bytes data, 0x61 ('a') and 0x62 ('b'). My configuration: DIP switch CPU 4 = off, DIP switch CIF11 1 to 6 = on,on,on,off,off,off, 2 wire RS485. (I also attached the program and settings) https://postimg.cc/gallery/pr293Jc Could you help me to solve this problem? Thanks Program and Settings: Result:
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Hello everyone, I want to use my own computer as plc. I have a molex brand SST-PB3-PCU SST card. I will connect my I/O modules to the profibus adapter, then I will connect the adapter to the SST card. Can Codesys see this SST card and if so how do I make the connection. I can connect this type of connection in the InControl (an old software) program that I used before. Please Help Me!! The Board I use to connect the I/Os to the computer: SST-PB3-PCU Profibus Adapter to which I connect I/Os: 1794-APB | Allen Bradley PROFIBUS Adapter Module My I/O Modules: Allen Bradley 1794-IB16 and 1794-OB16 My OS: Win10 64 bit Codesys Version: CODESYS V3.5 SP18 Patch 3
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Issue when using PLC S7-1500 as OPC UA client to connect with OPC UA server having certificate
Danh Vo posted a topic in Siemens
Dear all, I'd like to get your support on the issue with OPC UA certificate. My OPC UA server has been built with Node.js. The PLC S7-1500 (firmware v2.9) acts as OPC UA client. It's working well without certificate but when I use certificate, there are 2 situations: 1. When connecting using "Online access" (as attachment) in the "OPCUA Communication >> Client interfaces", I can connect with certificate (after I export and copy the PLC's certificate to the trusted folder of the server). --> server is ok. 2. When coding and running with real PLC: can't connect, there is even no PLC's certificate on the rejected folder of the server and there is no any error, the Status of block "OPC UA Connect DB" is still 16#0000_0000. So, what I did with certificate in TIA Portal (V17) are: - Enable the Global security setting for certificate manager - Created (and tested) with both self-signed certificate and CA certificate for PLC - Added server's certificate to trusted list in "Certificate manager" of TIA Portal (also added to the "Certificate of the partner devices" in Device config) - In "OPCUA Communication >> Client interfaces", chose the Security Mode/Policy and PLC's certificate (already tried with and without this setting) In my point of view, the problem is that the PLC received the certificate but somehow it didn't read correctly or didn't compare with the certificate in the trusted list because if the PLC does this step, it should send its certificate to (the rejected folder of) server. Could anyone help me to solve this issue? Thank you in advance. [Update] 1.The PLC throw the error code 16#8016_0000 (BadCertificateHostNameInvalid/The HostName used to connect to a Server does not match a HostName in the Certificate - as I searched in google) but it's very quick so I could not see this behavior at the beginning. 2. I have tested with UA Expert, I can connect without any problem/warning. So, the high confidence that problem comes from PLC. ---------- Best regards, Danh Vo -
I have a cell phone modem connected to my Omron CP1L on serial 2 Here is the issue I need to pull the phone number out of the msg received (receiving text messages) I receive a text msg and a lot of other crap like time and date ect. RDX says store in D100 the problem is that after I receive the SMS I see the phone number and copy the number to D200 to D2xx The next text comes in and it is added to the length of the previous text and the new phone number is not in the same D area as the first. It seems the only time the serial port works is if you declare 20 characters and you get 20 characters Works every time. But sometimes I may get 12 characters and other times I can get more than 100. I have used the restart and clear port command with no luck. If I set RDX to a large number and receive complete will not come on and the next receive will be added to the first. I need a clear buffer for each receive. How do I get around this? If you set the RDX to 10 but 12 characters were received the 2 extra characters will be in the buffer and added to the next receive. I can’t use end receive if x because there is nothing that is always available in the msg. And even if I do any characters received after end code is left in the buffer and screws up the next receive. I have never seen anything like this. Any ideas? Thanks Rob
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Sorry its long !! I am recieving text from a GSM modem for text msg Send and receive (SMS) works ok but would be better if I could make use of the start code and end code. This way I could cut down on all the crap that is received when a text arrives. I get this CMTI: "SM",0 I have it stored into D80 and I have that trigger a TXD that sends AT+CMGRD=0 and that tells the GSM to send the msg (The 0 is the current msg in memory) ------ The problem is that there is Carriage Return and Line Feeds in the received msg ---- AS below ((AT+CMGRD=0 +CMGRD: "REC UNREAD","+19028991212","","22/10/20,16:57:54-16" Hello this is the msg OK)) When the PLC sees the carriage return it stops receiving data. And I have no start code or end code setup. (I am using characters received) The way around this is to set a high character count in the RXD (More than the actual msg (More than the msg length) The main issue with that is I get garbage in as the msg gets bigger. Its unreliable. I clear the port after each receive and that helps but still get the odd garbage. (Never get garbage when connected to a terminal prg). Any Ideas???? ps Even the Start Code is unreliable as it will start receiving a few characters late. Rob
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I have a CP1L-EM and the serial ports - both of them have an issue with the port ready flag will not turn on. Power cycle still no port ready flag In settings both ports are set up as 15200 8N1 CR/LF Verified and power cycled and still no port ready flag. Is there someplace in the PLC where the ports can be disabled? Rob
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Looking for a good USB to Serial (RS232) Converter
KnuckleDragger posted a topic in General Topics - The Lounge
Until recently, I haven't had to connect to a piece of hardware using a serial connection in quite sometime. Well, that all changed yesterday when I needed to connect to a Watlow F4T Controller. I dug around in the bottle drawer of my desk and pulled at not one, but two USB-Serial Converters that I saved for just such an occasion! My old ones worked on everything from Allen Bradley SLCs, to Schneider Drives. Unfortunately, neither appear to work in a Windows 10 environment. Searching the internet, I was not able to find any drivers for these old converters, but did find some posts in another forum stating that Microsoft changed how it manages its USB ports from Win 7 to Win 10. Thanks Microsoft! Sorry, I will cut this rant short and just ask my question. Can anyone recommend a USB-Serial Converter that works in a Windows 10/11 environment? Respectfully, Shane -
How to use a serial to Ethernet converter to send data to RSlogix
Walks posted a topic in Allen Bradley / Rockwell Automation
I'm trying to understand the basics of using a serial to ethernet converter such as this Comtrol DM-EIP-2101, with Studio5000 code. Basically I have a weighing machine that only outputs data via RS-232 and I need to send that data to a PC that will process it through a Studio5000 program and have the data displayed on an HMI using FTview SE. Is it as simple as just connecting the serial and ethernet to the converter and it does all the work? Obviously checking ip addresses and firmware will need to be verified. The main thing I am unsure of is the process of passing the individual data packets from the machine to the Logix code on the PC, things like what the weight of the item was, was it over weight or under, etc.... Would there be an AOI or tags built into the software for a machine like this Checkweigher? I've worked with much smaller items like Cognex Dataman cameras and I know you can just use their AOI that allows you to simply call a tag if you want to display information like if a scanned barcode was correct or whatever. If anyone has done something similar I'd appreciate any guidance. It can be difficult getting the information from the manufactures so I'm looking for answers anywhere I can. EDIT: I guess I should also clarify that only using one or the other (serial or E/IP) is not an option. It will be a serial connection from the Weighing machine to the converter and then Ethernet to the PC. -
Dear forum, I am facing a trouble at the moment and hoping somebody can assist. I have one HMI software, GT Designer 3, HMI: GS2107 and/or GT2107, the software works so far so fine. The software is used on several products, I dont want to maintain two or even more software versions. Two serial devices are connect: 1x MODBUS RS-485 1x MODBUS RS-232. The data transfer is done via DDT, no direct calls. The DDT transfer the MODBUS address to the internal GD-Registers. The GD-Registers are used within the HMI. My trouble is that in some cases, there is no RS-232 device connected. This creates time outs, slows down the HMI and its just not nice looking (I have a warning implemented "WARNING NO CONNECTION TO SERIAL DEVICE RS-232". Is there a way, that I can select (retained) that the RS-232 is connected / or not? Once the software is configured "NO RS-232 CONNECTED" I can handle the rest of the software. Anybody an idea how to do this? Many thanks.
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I would like to get some feedback or alternate suggestions in terms of monitoring a database connection. The attachment here shows the current programming for the DB_Connect function block which requires the Execute input to constantly be ON. From what I can tell, if the connection is dropped - let's just say the Ethernet cable is unplugged - this input will still be on, and according to the function block, still connected. The Get1minClk is in place to continuously try establish this connection once powered on, but I cannot find any way to periodically check this connection without dropping it and reestablishing it. My understanding is the _DBC_Status.Run only checks that the PLC service is running properly, but is there a way to monitor a heartbeat of the connection TO the database? The only way I've found thus far is to drop the connection and reconnect. But this would be detrimental to the system as it would possibly be reconnecting to the database while trying to write to out to it and hold up the show. As it stands in the second image, the Ethernet cable is unplugged, but the connection shows no errors. Thanks and happy Friday! -K
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Hi, So I have a problem, that BootP DHCP server doesn't find my 1734 AENTR series B and so I can't assign IP address to it. Been trying many things. Any advice? I'm new to AB and I guess it may be a really easy thing but so far I didn't find a solution.
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I am at a client site that has a line with multiple Omron G9SP-N20S safety controllers installed and I need to make a modification to the system. I tried to install the Omron Configurator and it asks for a serial number, and will not install without one. Omron said that it is on the CD that ships with the unit, but the equipment manufacturer did not supply any of the CDs. The only Omron solution is to order a replacement CD, that will take 5 days, which is 5 days too long as there is a hard stop in 2 days. I have tried entering numbers found on the controller, with no success. Does anyone have a better way, special contacts at Omron, to et it faster?
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Here is a post that we recently completed on the Automation Direct USB to RS485 Adapter. The USB-485M is a 2-wire USB to RS-485 serial communication adapter for RS485 use. It does not require an external power supply or complicated configuration. It has a Type A (plug) USB connector for the computer side and a universal female RJ45/RJ12 modular connector. This will accept RJ12 and RJ45 plugs. The USB-485M supports multiple baud rates and is USB V2.0 Compliant. Read the rest of the post... YouTube Video on the installation and communication to a Solo Process Temperature Controller via Modbus RTU. https://www.youtube.com/watch?v=aWE05ZNZNXw Let me know what you think, Garry www.accautomation.ca
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I am trying to get a G9SP taking over serial to a NX1P2 using a NX1W-CIF01. I have the details in Manual P545-E1 and it uses a example file which i am unable to locate OMRON_G9SP_SERI232_LD_EV100.SMC I have got the coms working with a CP1L using the example in Manual Z922-E1. I was wondering if anyone has the example file or a working example they can share for Sysmac Studio. The serial comms will take a little bit to get going but it is the code for the checksum for the sending data that i would rather not have to translate from CX Programer fort he CP1L to Sysmac Studio...... P545-E1-01.pdf.lnk Z922-E1-07.pdf.lnk
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Sorry for my bad english speaking. I want to change the baud rate to 19200,38400,.... for send it via Programmer-Serial-Port. The software GX-Developer can do it!.
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Very Slow Getting Online to SLC 5/05 Over Ethernet
queenslandpommie posted a topic in Allen Bradley / Rockwell Automation
We have an SLC 5/05 on our automation network, one of several SLC 5/05 processors on site. It functions perfectly well and no ethernet messaging issues or SCADA drop outs. The difficulty I am experiencing with it is when I am required to fault diagnose it takes a very long time to get online to it with our laptop running RSLogix500. It sometimes takes as long as 10 minutes. It makes no difference whether I use the Ethernet devices or the EtherNet/IP Driver in RSLinx, it nearly always takes an age which is frustrating in a breakdown situation. I don't ever experience these long wait times connecting to any other of the SLC 5/05 controllers or any other controllers for that matter. Once I am connected to the problematic controller I don't experience any issues, it's just the initial time getting online. I try to leave the laptop permanently connected to it to avoid the long wait time to connect. When I open RSLogix500, select Comms, Who Active Go Online, Ethernet devices driver, I can see that the problematic 5/05 has Active as its Status whereas the other 5/05 processors have Remote Run as their status. Please can anyone advise as to any possible program parameters, RSLinx settings or hardware faults I should be looking for? I have considered it could be a network problem but I'm unsure about this given how the processor performs well in every other regard. Neil
